WO2010051655A1 - 接收映射有mbms数据子帧的帧的方法、基站和移动台 - Google Patents

接收映射有mbms数据子帧的帧的方法、基站和移动台 Download PDF

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Publication number
WO2010051655A1
WO2010051655A1 PCT/CN2008/001855 CN2008001855W WO2010051655A1 WO 2010051655 A1 WO2010051655 A1 WO 2010051655A1 CN 2008001855 W CN2008001855 W CN 2008001855W WO 2010051655 A1 WO2010051655 A1 WO 2010051655A1
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Prior art keywords
sequence
frames
base station
frame
mapped
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PCT/CN2008/001855
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English (en)
French (fr)
Inventor
汪勇刚
陈宇
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Nokia Shanghai Bell Co Ltd
Alcatel Lucent SAS
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Alcatel Lucent Shanghai Bell Co Ltd
Alcatel Lucent SAS
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Priority to PCT/CN2008/001855 priority Critical patent/WO2010051655A1/zh
Priority to CN200880130945.8A priority patent/CN102144412B/zh
Publication of WO2010051655A1 publication Critical patent/WO2010051655A1/zh
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/30Resource management for broadcast services

Definitions

  • the present invention relates to the field of mobile communications, and more particularly to a method, a base station, and a mobile station for receiving a frame mapped with an MBMS (Multimedia Broadcast Multicast Service) data sub-frame from a base station by a mobile station, capable of moving from a base station to a mobile station
  • the station transmits signaling indicating a sequence of position numbers in a frame sequence consisting of a specific number of frames with a plurality of signaling resources mapped with less signaling resources, thereby saving radio resources.
  • MBMS Multimedia Broadcast Multicast Service
  • the "micro level" of sub-frame allocation all MBSFNs containing frames have the same amount of hall SFN subframes for a duration of 1 frame period.
  • the subframe will be continuously allocated in the frame (TDD (Time Division Duplex) continuous DL (downlink) subframe). That is, there is continuity between the allocated subframes (for example, there are no 0, 4, 5 subframes for FDD (Frequency Division Duplex), and no UL (uplink) subframe for TDD).
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • uplink uplink subframe for TDD
  • macro level allocation involves allocating a plurality of frames mapped with MBMS service data sub-frames in a sequence of frames consisting of a specific number of frames.
  • mapping of physical frames must be dispersed as much as possible, that is, the frames allocated with the MBMS service data sub-frames are fully dispersed in time to facilitate channel measurement, scheduling, and retransmission of unicast services;
  • a 32-bit map in 320 ms that is, a 32-bit map indicates that a plurality of frames mapped with MBMS service data sub-frames are in a certain number of frames.
  • a sequence of position numbers in the constructed frame sequence The goal is that any combination of any number of MBSFN (Multicast Broadcast Single Frequency Network) radio frames and MBSFN radio frames is feasible, thereby avoiding the organization of MBSFN areas and the reorganization of MBMS service scheduling.
  • SIB1 system information block 1 (repeated every 80ms)
  • SIB1 system information block 1 (repeated every 80ms)
  • the 32-bit may be costly, and a 10-bit secondary flexibility scheme is proposed in the present application as described below.
  • Another prior art solution involves a 2N scheme in which only six radio frames such as 1, 2, 4, 8, 16 or 32 can be allocated to the MBSFN.
  • the first value indicates that each radio frame includes an MBSFN subframe; the second value indicates that one frame per MB frame includes MBSFN, and the third value indicates that one frame per four radio frames includes MBSFN, and so on, such as Figure 1 shows.
  • Table 1 Impact of adding MBSFN subframes to increase MBSFN bandwidth
  • the present invention has been made in order to overcome the above disadvantages of the prior art. Accordingly, it is an object of the present invention to provide a method, a base station, and a mobile station that receive a frame mapped with an MBMS data subframe from a base station by a mobile station, and can transmit a representation from the base station to the mobile station with less signaling resources.
  • the plurality of frames of the MBMS service data subframe are signaled by a sequence of position numbers in a sequence of frames consisting of a specific number of frames, thereby saving radio resources.
  • a mobile broadcast multicast service is received by a mobile station from a base station.
  • the method for the frame of the MBMS data subframe includes: the base station acquires, from the network control end, a sequence of position numbers of a plurality of frames mapped with the MBMS service data subframe in a frame sequence consisting of a specific number of frames; and the base station processes the acquired location
  • the numbering sequence is such that the location number in the sequence of location numbers is signaled in as continuous a manner as possible and the signaling is communicated to the mobile station; the base station transmits the sequence of frames to the mobile station, and the mobile station transmits according to the slave base station
  • the signaling determines a frame mapped with an MBMS service data subframe from the received sequence of frames.
  • the base station processes the acquired sequence of location numbers to make the location in the sequence of location numbers
  • the 2008/001855 numbering step of signaling in as continuous a manner as possible comprises: the base station converting the sequence of position numbers into a sequence of consecutive position numbers from a minimum position number to a maximum position number, and a sequence of consecutive position numbers to be converted Expressed in the binary bit signaling.
  • the binary bit signaling is composed of a continuous bit amount and a bit offset
  • the bit offset indicates a starting position number of the frame in which the MBMS service data subframe is mapped in the frame sequence, and a continuous bit amount. Indicates the number of consecutive mappings of the MBMS service data subframe from the start position number.
  • the step of the base station processing the acquired location number sequence to signal the location number in the location number sequence in a continuous manner as possible comprises: the base station consecutively one or more of the acquired location number sequences
  • the location number subsequence and one or more discrete location numbers are each represented by respective respective binary bit signaling.
  • each of the respective respective binary bit signalings is composed of a continuous bit amount and a bit offset, and the bit offset indicates that a frame mapped with the MBMS service data subframe is in the frame sequence.
  • the start position number, and the continuous bit amount indicate the number of consecutively mapped frames of the MBMS service data sub-frame from the start position number.
  • the sequence of frames transmitted by the base station to the mobile station is interleaved, and wherein the mobile station determines that the MBMS is mapped from the received sequence of frames according to the signaling transmitted from the base station.
  • the step of the frame of the service data subframe includes: the base station transmitting the mapping information of the interleaving process to the mobile station; and the mobile station obtaining, according to the received mapping information of the interleaving process, the frame of each position number in the frame sequence after the interleaving process a location map; the mobile station determines a frame to which the MBMS service data subframe is mapped from the received sequence of frames based on the signaling transmitted from the base station and the location map.
  • the method is suitable for a multicast broadcast single frequency network MBSFN.
  • a base station including: an obtaining apparatus, configured to acquire, from a network control end, a sequence of position numbers in a frame sequence consisting of a specific number of frames of a plurality of frames mapped with MBMS service data subframes And a processing device, configured to process the acquired sequence of location numbers such that the location numbers in the sequence of location numbers are signaled in as continuous a manner as possible, and the transmitting device transmits the signaling to the mobile station.
  • the base station further includes: an interleaving device, configured to perform interleaving processing on the frame sequence; and wherein the transmitting device sends the interleaved frame sequence and the interleaved processing mapping information to the mobile station
  • the processing device converts the sequence of position numbers into a number from a minimum position to a maximum A sequence of consecutive position numbers of position numbers, and a sequence of consecutive position numbers converted to be represented by the binary bit signaling.
  • the binary bit signaling is composed of a continuous bit amount and a bit offset
  • the bit offset indicates a starting position number of the frame in which the MBMS service data subframe is mapped in the frame sequence, and a continuous bit amount. Indicates the number of consecutive mappings of the MBMS service data subframe from the start position number.
  • the processing means respectively represents one or more consecutive position number subsequences and one or more discrete position numbers in the acquired sequence of position numbers by respective corresponding two-bit bit signals.
  • each of the respective respective binary bit signalings is composed of a continuous bit amount and a bit offset, and the bit offset indicates that a frame mapped with the MBMS service data subframe is in the frame sequence.
  • the start position number, and the continuous bit amount indicate the number of consecutively mapped frames of the MBMS service data sub-frame from the start position number.
  • the base station is located in a multicast broadcast single frequency network MBSFN.
  • a mobile station comprising: receiving means, receiving a sequence of frames from a base station, and representing a plurality of frames mapped with MBMS service data sub-frames in a continuous manner as possible by a specific number of frames Signaling of the location number sequence in the sequence of frames; and determining means for determining a frame to which the MBMS service data subframe is mapped from the received sequence of frames based on the received signaling.
  • the mobile station further includes: an obtaining device, configured to obtain, according to the mapping information of the interleaving process received from the base station, a location map of the frame of each location number in the frame sequence after the interleaving process; and wherein the receiving device
  • the mapping information of the interleaving process is received from the base station, and the determining means determines, from the received frame sequence, a frame to which the MBMS service data subframe is mapped, according to the received signaling and the location map.
  • the mobile station is located in a multicast broadcast single frequency network MBSFN.
  • MBSFN multicast broadcast single frequency network
  • Figure 1 is a schematic illustration of a prior art 2" N solution
  • FIG. 2 is a schematic diagram showing an example of a layout of an MBSFN to which the present invention is applied;
  • FIG. 3 is a frame for receiving, by a mobile station, a subframe in which an MBMS data subframe is mapped, according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of interleaving a sequence of frames according to an embodiment of the present invention.
  • Figure 5 is a block diagram of a base station according to an embodiment of the present invention.
  • FIG. 6 is a block diagram of a mobile station in accordance with an embodiment of the present invention. detailed description
  • the present invention relates to macro level allocation and proposes a 10-bit secondary flexibility scheme for signaling transfer between a base station and a mobile station, as will be described in detail later.
  • Fig. 2 is a schematic diagram showing an example of the layout of the MBSFN to which the present invention is applied.
  • the MBSFN network to which the present invention is applied includes a plurality of single frequency network areas SFA1 to SFA7, and a plurality of single frequency network areas overlap each other, and each single frequency network area is composed of one or more base stations (not shown). To cover, and a plurality of mutually disjoint areas a to 1 are formed. There is a network controller (not shown) in the MBSFN network for overall control of devices (including base stations) in the network.
  • FIG. 3 is a flow diagram of a method for receiving, by a mobile station, a frame mapped with an MBMS data sub-frame from a base station in accordance with an embodiment of the present invention.
  • a base station acquires, from a network control terminal, a plurality of frames mapped with MBMS service data subframes, which are composed of a specific number of frames. A sequence of position numbers in a sequence of frames.
  • the base station processes the acquired sequence of location numbers to cause the location numbers in the sequence of location numbers to be signaled in as continuous a manner as possible and to communicate the signaling to a mobile station (e.g., a mobile station in area a) .
  • the base station performs interleaving processing on the frame.
  • the base station transmits the interleaved frame sequence and the interleaved mapping information to the mobile station.
  • the mobile station receives the interleaved frame sequence transmitted by the base station and the mapping information of the interleaving process, and obtains the frame sequence of the frame of each position number after the interleaving process according to the received mapping information of the interleaving process.
  • Location map in .
  • the mobile station determines a frame to which the MBMS service data subframe is mapped from the received frame sequence based on the signal transmitted from the base station and the location map.
  • Table 2 the first scheme in which the base station processes the acquired location number sequence and is signaled is shown in Table 2.
  • the full flexibility column in Table 2 reflects the location number of a base station (e.g., a base station in area a) that is obtained from a network control end and has a plurality of frames mapped with MBMS service data sub-frames in a sequence of frames consisting of a specific number of frames.
  • the sequence and the second flexibility column reflect the sequence of position numbers processed by the base station and its binary bit signaling representation.
  • the base station converts the sequence of position numbers into a sequence of consecutive position numbers from the minimum position number to the maximum position number, and the converted sequence of consecutive position numbers is represented by the binary bit signal.
  • the binary bit signaling consists of a continuous bit amount and a bit offset, the bit offset indicating a starting position number of a frame in which the MBMS service data subframe is mapped in the frame sequence, and a continuous bit amount indicating The consecutive mapping starting from the start position number has the number of frames of the MBMS service data subframe.
  • the continuous bit amount and the bit offset may be represented by 5 bits, respectively.
  • a special bit string 11 1 11, 1 111 1 indicates that the entire 32 frames are allocated.
  • signaling 00101, 01000, the amount of allocated frames is 5, and the starting frame is 8.
  • Table 3 the second scheme in which the base station processes the acquired location number sequence and is signaled is shown in Table 3.
  • the base station expresses one or more consecutive position number subsequences and one or more discrete position numbers in the acquired position number sequence, respectively, in respective respective binary bit signalings.
  • the base station of area a denotes a discrete position number 1 with a binary bit signalling 00001, 00000, and the remaining two consecutive position number subsequences 4 and 5 are represented by a binary bit signal 00010, 00011. .
  • each of the respective said binary bit signaling is similar to the representation of the binary bit signaling of Table 2.
  • Table 3 shows a schematic diagram of interleaving a sequence of frames.
  • FIG. 5 is a block diagram of a base station in accordance with an embodiment of the present invention.
  • the base station includes: an obtaining means 501, a processing means 503, an interleaving means 505, and a transmitting means 507.
  • the obtaining means 501 acquires, from the network control terminal, a sequence of position numbers of a plurality of frames mapped with MBMS service data sub-frames in a frame sequence composed of a specific number of frames.
  • Processing device 503 processes the sequence of location numbers obtained to cause the location numbers in the sequence of location numbers to be signaled in as continuous a manner as possible.
  • the interleaving unit 505 performs interleaving processing on the frame sequence.
  • the transmitting device 507 transmits the signaling to the mobile station, and transmits the interleaved frame sequence and the interleaved mapping information to the mobile station.
  • Figure 6 is a block diagram of a mobile station in accordance with an embodiment of the present invention.
  • the mobile station includes: a receiving device 601, an obtaining device 603, and a determining device 605.
  • the receiving device 601 receives the frame sequence from the base station, and indicates, as far as possible, the signaling of the position number sequence of the plurality of frames mapped with the MBMS service data subframe in the frame sequence composed of the specific number of frames, and the interleaving process. Map information.
  • the obtaining means 603 obtains a position map in the frame sequence after the interleaving process of the frames of the respective position numbers based on the mapping information of the interleaving process received from the base station.
  • the determining means 605 determines, from the received sequence of frames, a frame to which the MBMS service data subframe is mapped, based on the received signaling and the location map.

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Description

接收映射有 MBMS数据子帧的帧的方法、 基站和移动台 技术领域
本发明涉及移动通信领域, 更具体地, 本发明涉及一种由移动台从基站接 收映射有 MBMS (多媒体广播组播业务) 数据子帧的帧的方法、 基站和移动台, 能 够从基站向移动台以较少的信令资源来传递表示映射有 MBMS业务数据子帧的多 个帧在由特定数量的帧构成的帧序列中的位置编号序列的信令, 从而节省了无线 资源。 背景技术
在 3GPP (第三代伙伴计划) 的 RAN2 # 62次会议上, 同意了两级分配方案:
- 微观级分配子帧分配;
- 指示微观级可应用的宏观级分配。
对于进行子帧分配的 "微观级", 包含帧的所有 MBSFN在 1帧周期的持续时间 内具有相同量的廳 SFN子帧。 子帧将在该帧被连续分配 (TDD (时分双工) 连续 DL (下行链路)子帧)。也就是, 被分配的子帧之间具有连续性(例如, 对于 FDD (频 分双工) 没有 0、 4、 5子帧, 对于 TDD, 没有 UL (上行链路) 子帧)。 但是, 对于 宏观级分配, 还有待进一步研究。 所谓的宏观级分配涉及在由特定数量的帧构成 的帧序列中分配映射有 MBMS业务数据子帧的多个帧。
宏观级分配有两个基本要求,
(1) 物理帧的映射在时间上必须尽量得分散, 即分配映射有 MBMS业务 数据子帧的帧在时间上充分散开, 以有利于单播业务的信道测 量、 调度和重传;
(2) 避免过分配, 即信令指示的分配映射有 MBMS业务数据子帧的帧比 实际分配的多, 以节省资源。
在现有技术中, 已经提出了在宏观级上存在全灵活性, 即 320ms中的 32位图, 即由 32位图来表示映射有 MBMS业务数据子帧的多个帧在由特定数量的帧构成的 帧序列中的位置编号序列。 其目标是任何数量的 MBSFN (组播广播单频网) 无线 帧和 MBSFN无线帧的任意组合均是可行的, 从而避免 MBSFN区域的组织和 MBMS业务 调度的重新组织的限制。 考虑在 SIB1 (系统信息块 1 ) (每 80ms就重复发一次) 中 32位可能会花费高代价, 在如下所描述的本申请中提出了利用 10比特的次灵活性 方案。
另一现有技术方案涉及 2 N方案, 其中仅可以有 1、 2、 4、 8、 16或 32这样六 种无线帧分配给 MBSFN的可能。 第一值表示每一个无线帧都包括 MBSFN子帧; 第二 值表示每二个无线帧中有一个帧包括 MBSFN, 第三值表示每四个无线帧中有一个 帧包括 MBSFN , 依次类推, 如图 1所示。
上述现有技术方案的问题是太多资源被浪费, 平均 9. 5个子帧过分配, 而在 针对 1帧方案上存在平均少于 1个子帧的过分配。
在下表 1中, 将针对数据粒度来评估无线帧的部分, 该表反映了如果在 2 的方案中添加 MBSFN子帧, 则必须传送多少 MBSFN数据。
表 1: 添加 MBSFN子帧对增加 MBSFN带宽的影响
Figure imgf000004_0001
如表 1所示显而易见,从 16个无线帧到 32个无线帧,对于分配而言粒度太大。 发明内容
为了克服现有技术的上述缺陷提出了本发明。 因此, 本发明的目的是提出 一种由移动台从基站接收映射有 MBMS数据子帧的帧的方法、 基站和移动台, 能够 从基站向移动台以较少的信令资源来传递表示映射有 MBMS业务数据子帧的多个 帧在由特定数量的帧构成的帧序列中的位置编号序列的信令, 从而节省了无线资 源。
根据本发明, 提出了一种由移动台从基站接收映射有多媒体广播组播业务
MBMS数据子帧的帧的方法, 包括: 基站从网络控制端获取映射有 MBMS业务数据子 帧的多个帧在由特定数量的帧构成的帧序列中的位置编号序列; 基站处理所获取 的位置编号序列以使位置编号序列中的位置编号以尽可能连续的方式用信令表 示, 并向移动台传递所述信令; 基站向移动台传送所述帧序列, 以及移动台根据 从基站所传送的所述信令, 从所接收到的帧序列中确定映射有 MBMS业务数据子帧 的帧。
优选地, 所述基站处理所获取的位置编号序列以使位置编号序列中的位置 2008/001855 编号以尽可能连续的方式用信令表示的步骤包括: 基站将所述位置编号序列转换 为从最小位置编号到最大位置编号的连续位置编号序列, 以及将转换后的连续位 置编号序列以所述二进制比特信令来表示。
优选地, 所述二进制比特信令由连续比特量和比特偏移量构成, 比特偏移 量表示映射有 MBMS业务数据子帧的帧在所述帧序列中的起始位置编号, 以及连续 比特量表示从起始位置编号开始的连续的映射有 MBMS业务数据子帧的帧的个数。
优选地, 所述基站处理所获取的位置编号序列以使位置编号序列中的位置 编号以尽可能连续的方式用信令表示的步骤包括: 基站将所获取的位置编号序列 中一个或多个连续的位置编号子序列和一个或多个离散的位置编号分别以各个 相应的所述二进制比特信令来表示。
优选地, 所述各个相应的所述二进制比特信令的每一个由连续比特量和比 特偏移量构成, 比特偏移量表示映射有 MBMS业务数据子帧的帧在所述帧序列中的 起始位置编号, 以及连续比特量表示从起始位置编号开始的连续的映射有 MBMS业 务数据子帧的帧的个数。
优选地, 基站向移动台传送的所述帧序列是经过交织处理后的, 以及其中, 所述移动台根据从基站所传送的所述信令, 从所接收到的帧序列中确定映射有 MBMS业务数据子帧的帧的步骤包括: 基站向移动台发送交织处理的映射信息; 移 动台根据所接收到的交织处理的映射信息, 获得各个位置编号的帧在经过交织处 理后的帧序列中的位置映射图; 移动台根据从基站所传送的所述信令以及所述位 置映射图, 从所接收到的帧序列中确定映射有 MBMS业务数据子帧的帧。
优选地, 所述方法适合于组播广播单频网 MBSFN。
另外, 根据本发明, 提出了一种基站, 包括: 获取装置, 用于从网络控制 端获取映射有 MBMS业务数据子帧的多个帧在由特定数量的帧构成的帧序列中的 位置编号序列; 处理装置, 用于处理所获取的位置编号序列以使位置编号序列中 的位置编号以尽可能连续的方式用信令表示, 以及发送装置, 向移动台传递所述 信令。
优选地, 所述基站还包括: 交织装置, 用于对帧序列进行交织处理; 以及 其中所述发送装置将交织处理后的帧序列以及交织处理的映射信息发送到移动 台
优选地, 所述处理装置将所述位置编号序列转换为从最小位置编号到最大 位置编号的连续位置编号序列, 以及将转换后的连续位置编号序列以所述二进制 比特信令来表示。
优选地, 所述二进制比特信令由连续比特量和比特偏移量构成, 比特偏移 量表示映射有 MBMS业务数据子帧的帧在所述帧序列中的起始位置编号, 以及连续 比特量表示从起始位置编号开始的连续的映射有 MBMS业务数据子帧的帧的个数。
优选地, 所述处理装置将所获取的位置编号序列中一个或多个连续的位置 编号子序列和一个或多个离散的位置编号分别以各个相应的所述二迸制比特信 令来表示。
优选地, 所述各个相应的所述二进制比特信令的每一个由连续比特量和比 特偏移量构成, 比特偏移量表示映射有 MBMS业务数据子帧的帧在所述帧序列中的 起始位置编号, 以及连续比特量表示从起始位置编号开始的连续的映射有 MBMS业 务数据子帧的帧的个数。
优选地, 所述基站位于组播广播单频网 MBSFN。
此外, 根据本发明. 提出了一种移动台, 包括: 接收装置, 从基站接收帧 序列、 以及以尽可能连续的方式表示映射有 MBMS业务数据子帧的多个帧在由特定 数量的帧构成的帧序列中的位置编号序列的信令; 以及确定装置, 根据所接收的 所述信令, 从所接收到的帧序列中确定映射有 MBMS业务数据子帧的帧。
优选地, 所述移动台还包括: 获取装置, 根据从基站接收到的交织处理的 映射信息获得各个位置编号的帧在经过交织处理后的帧序列中的位置映射图; 以 及其中所述接收装置从基站接收交织处理的映射信息, 并且所述确定装置根据所 接收的所述信令以及所述位置映射图, 从所接收到的帧序列中确定映射有 MBMS业 务数据子帧的帧。
优选地, 所述移动台位于组播广播单频网 MBSFN。 附图说明
通过参考以下结合附图对所采用的优选实施例的详细描述, 本发明的上述 目的、 优点和特征将变得显而易见, 其中:
图 1是现有技术的 2 " N方案方案的示意图;
图 2是本发明所应用的 MBSFN的布局的一个示例的示意图;
图 3是根据本发明实施例的由移动台从基站接收映射有 MBMS数据子帧的帧 的方法的流程图;
图 4是根据本发明实施例的对帧序列进行交织处理的示意图;
图 5根据本发明实施例的基站的方框图; 以及
图 6根据本发明实施例的移动台的方框图。 具体实施方式
本发明涉及宏观级分配并且提出了在基站和移动台之间的信令传递利用 10 比特的次灵活性方案, 具体如稍后所详细描述的。
图 2是本发明所应用的 MBSFN的布局的一个示例的示意图。
如图 2所示, 本发明所应用的 MBSFN网络包括多个单频网区域 SFA1到 SFA7 , 多个单频网区域相互重叠, 每一个单频网区域由一个或多个基站 (未示出) 来覆 盖, 并且形成了多个相互不相交区域 a到 1。 MBSFN网络中存在一个网络控制器(未 示出), 用于对网络中的设备 (包括基站) 进行总体控制。
图 3是根据本发明实施例的由移动台从基站接收映射有 MBMS数据子帧的帧 的方法的流程图。
如图 3所示, 根据本发明的方法, 在步骤 301, 基站(例如, 区域 a中的基站) 从网络控制端获取映射有 MBMS业务数据子帧的多个帧在由特定数量的帧构成的 帧序列中的位置编号序列。 在步骤 303, 基站处理所获取的位置编号序列以使位 置编号序列中的位置编号以尽可能连续的方式用信令表示, 并向移动台 (例如区 域 a中的移动台) 传递所述信令。 在步骤 305 , 基站对所述帧进行交织处理。 在步 骤 307, 基站向移动台传送交织处理后的帧序列以及交织处理的映射信息。 在步 骤 309 , 移动台接收基站传送来的交织处理后的帧序列以及交织处理的映射信息, 并且根据所接收到的交织处理的映射信息, 获得各个位置编号的帧在经过交织处 理后的帧序列中的位置映射图。 在步骤 31 1, 移动台根据从基站所传送的所述信 令以及所述位置映射图, 从所接收到的帧序列中确定映射有 MBMS业务数据子帧的 帧。
结合图 2, 基站处理所获取的位置编号序列并用信令表示的第一方案如表 2 所示。 表 2
Figure imgf000008_0001
表 2中的全灵活性栏反映了基站 (例如区域 a中的基站〉 从网络控制端获取 的映射有 MBMS业务数据子帧的多个帧在由特定数量的帧构成的帧序列中的位置 编号序列。而次灵活性栏反映了基站处理后的位置编号序列以及其二进制比特信 令表示。
如表 2所示, 基站将所述位置编号序列转换为从最小位置编号到最大位置编 号的连续位置编号序列, 以及将转换后的连续位置编号序列以所述二进制比特信 令来表示。
这里, 所述二进制比特信令连续比特量和比特偏移量构成, 比特偏移量表 示映射有 MBMS业务数据子帧的帧在所述帧序列中的起始位置编号, 以及连续比特 量表示从起始位置编号开始的连续的映射有 MBMS业务数据子帧的帧的个数。作为 示例, 连续比特量和比特偏移量可以分别用 5比特来表示。 例如特殊的比特串 11 1 11, 1 111 1表示整个 32帧被分配。 而作为信令 = 00101, 01000, 所分配的帧的 量是 5, 起始帧是 8。 结合图 2 , 基站处理所获取的位置编号序列并用信令表示的第二方案如表 3 所示。 表 3
Figure imgf000009_0001
如表 3所示, 基站将所获取的位置编号序列中一个或多个连续的位置编号子 序列和一个或多个离散的位置编号分别以各个相应的所述二进制比特信令来表 示。例如,区域 a的基站将一个离散位置编号 1用一个二进制比特信令 00001, 00000 来表示, 而将其余的两个连续的位置编号子序列 4和 5用一个二进制比特信令 00010, 00011来表示。
如表 3所示, 各个相应的所述二进制比特信令的每一个的表示方法类似于表 2的二进制比特信令的表示方法。 作为示例, 在实际的宏观级分配帧, 考虑到单播调度、 重传以及信道测量, 需要尽可能离散地在物理层映射 MBSFN无线帧。 为了达到这一点, 最简单的方法 是进行交织, 例如采用标准化的 8 X 4块交织器, 这将较好地使 MBSFN无线帧离散。 图 4示出了对帧序列进行交织处理的示意图。
以上在本发明的方法中己经描述了基站对所述帧序列进行交织, 并将交织 处理的映射信息传递到移动台, 以使移动台进行相应的处理。 需要指出的是, 在 本发明的具体实现中交织的手段是可选的, 利用交织手段仅是本发明的一个示 例, 本发明并不局限于此。 . 图 5根据本发明实施例的基站的方框图。
如图 5所示, 根据本发明的基站包括: 获取装置 501、 处理装置 503、 交织装 置 505和发送装置 507。 获取装置 501从网络控制端获取映射有 MBMS业务数据子帧 的多个帧在由特定数量的帧构成的帧序列中的位置编号序列。 处理装置 503处理 所获取的位置编号序列以使位置编号序列中的位置编号以尽可能连续的方式用 信令表示。 交织装置 505对帧序列进行交织处理。 发送装置 507向移动台传递所述 信令, 并且将交织处理后的帧序列以及交织处理的映射信息发送到移动台。 图 6根据本发明实施例的移动台的方框图。
如图 6所示, 根据本发明的移动台包括: 接收装置 601、 获取装置 603、 以及 确定装置 605。 接收装置 601从基站接收帧序列、 以尽可能连续的方式表示映射有 MBMS业务数据子帧的多个帧在由特定数量的帧构成的帧序列中的位置编号序列 的信令、 以及交织处理的映射信息。 获取装置 603根据从基站接收到的交织处理 的映射信息获得各个位置编号的帧在经过交织处理后的帧序列中的位置映射图。 所述确定装置 605根据所接收的所述信令以及所述位置映射图, 从所接收到的帧 序列中确定映射有 MBMS业务数据子帧的帧。 尽管以上已经结合本发明的优选实施例示出了本发明, 但是本领域的技术 人员将会理解, 在不脱离本发明的精神和范围的情况下, 可以对本发明进行各种 修改、 替换和改变。 因此, 本发明不应由上述实施例来限定, 而应由所附权利要 求及其等价物来限定。

Claims

1、 一种由移动台从基站接收映射有多媒体广播组播业务 MBMS数据子帧的帧 的方法, 包括- 基站从网络控制端获取映射有 MBMS业务数据子帧的多个帧在由特定数量的 帧构成的帧序列中的位置编号序列;
基站处理所获取的位置编权号序列以使位置编号序列中的位置编号以尽可能 连续的方式用信令表示, 并向移动台传递所述信令;
基站向移动台传送所述帧序列, 以及
移动台根据从基站所传送的所述信令, 从所接收到的帧序列中确定映射有
MBMS业务数据子帧的帧。 求
2、 根据权利要求 1所述的方法, 其中所述基站处理所获取的位置编号序列 以使位置编号序列中的位置编号以尽可能连续的方式用信令表示的步骤包括: 基站将所述位置编号序列转换为从最小位置编号到最大位置编号的连续位 置编号序列, 以及
将转换后的连续位置编号序列以所述二进制比特信令来表示。
3、 根据权利要求 2所述的方法, 其中所述二进制比特信令由连续比特量和 比特偏移量构成, 比特偏移量表示映射有 MBMS业务数据子帧的帧在所述帧序列中 · 的起始位置编号, 以及连续比特量表示从起始位置编号开始的连续的映射有 MBMS 业务数据子帧的帧的个数。
4、 根据权利要求 1所述的方法, 其中所述基站处理所获取的位置编号序列 以使位置编号序列中的位置编号以尽可能连续的方式用信令表示的步骤包括: 基站将所获取的位置编号序列中一个或多个连续的位置编号子序列和一个 或多个离散的位置编号分别以各个相应的所述二进制比特信令来表示。
5、 根据权利要求 4所述的方法, 其中所述各个相应的所述二进制比特信令 的每一个由连续比特量和比特偏移量构成, 比特偏移量表示映射有 MBMS业务数据 子帧的帧在所述帧序列中的起始位置编号, 以及连续比特量表示从起始位置编号 开始的连续的映射有 MBMS业务数据子帧的帧的个数。
6、 根据权利要求 1所述的方法, 其中基站向移动台传送的所述帧序列是经 过交织处理后的, 以及
' 其中, 所述移动台根据从基站所传送的所述信令, 从所接收到的帧序列中 确定映射有 MBMS业务数据子帧的帧的步骤包括:
基站向移动台发送交织处理的映射信息;
移动台根据所接收到的交织处理的映射信息, 获得各个位置编号的帧在经 过交织处理后的帧序列中的位置映射图;
移动台根据从基站所传送的所述信令以及所述位置映射图, 从所接收到的 帧序列中确定映射有 MBMS业务数据子帧的帧。
7、根据权利要求 1所述的方法,其中所述方法适合于组播广播单频网 MBSFN。
8、 一种基站, 包括:
获取装置, 用于从网络控制端获取映射有 MBMS业务数据子帧的多个帧在由 特定数量的帧构成的帧序列中的位置编号序列;
处理装置, 用于处理所获取的位置编号序列以使位置编号序列中的位置编 号以尽可能连续的方式用信令表示, 以及
发送装置, 向移动台传递所述信令。
9、 根据权利要求 8所述的基站, 还包括:
交织装置, 用于对帧序列进行交织处理; 以及
其中所述发送装置将交织处理后的帧序列以及交织处理的映射信息发送到 移动台。
10、 根据权利要求 8所述的基站, 其中所述处理装置将所述位置编号序列转 换为从最小位置编号到最大位置编号的连续位置编号序列, 以及将转换后的连续 位置编号序列以所述二进制比特信令来表示。
1 1、 根据权利要求 10所述的基站, 其中所述二进制比特信令由连续比特量 和比特偏移量构成, 比特偏移量表示映射有 MBMS业务数据子帧的帧在所述帧序列 中的起始位置编号, 以及连续比特量表示从起始位置编号开始的连续的映射有 MBMS业务数据子帧的帧的个数。
12、 根据权利要求 8所述的基站, 其中所述处理装置将所获取的位置编号序 列中一个或多个连续的位置编号子序列和一个或多个离散的位置编号分别以各 个相应的所述二进制比特信令来表示。
13、 根据权利要求 12所述的基站, 其中所述各个相应的所述二进制比特信 令的每一个由连续比特量和比特偏移量构成, 比特偏移量表示映射有 MBMS业务数 据子帧的帧在所述帧序列中的起始位置编号, 以及连续比特量表示从起始位置编 号开始的连续的映射有 MBMS业务数据子帧的帧的个数。
14、 根据权利要求 8所述的基站, 所述基站位于组播广播单频网腿 SFN。
15、 一种移动台, 包括- 接收装置, 从基站接收帧序列、 以及以尽可能连续的方式表示映射有 MBMS 业务数据子帧的多个帧在由特定数量的帧构成的帧序列中的位置编号序列的信 令; 以及
确定装置,根据所接收的所述信令,从所接收到的帧序列中确定映射有 MBMS 业务数据子帧的帧。
16、 根据权利要求 15所述的移动台, 还包括:
获取装置, 根据从基站接收到的交织处理的映射信息获得各个位置编号的 帧在经过交织处理后的帧序列中的位置映射图;
以及其中所述接收装置从基站接收交织处理的映射信息, 并且所述确定装 置根据所接收的所述信令以及所述位置映射图, 从所接收到的帧序列中确定映射 有 MBMS业务数据子帧的帧。
17、根据权利要求 15所述的移动台,所述移动台位于组播广播单频网 MBSFN。
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